changedetection.io is an open-source tool for monitoring changes on web pages. Its core purpose is to automatically detect website content updates and send alerts. It can be used for general page updates, competitor page monitoring, product restock alerts, price tracking, subscribing to pages without RSS, and similar scenarios. The official service also offers a cloud-hosted subscription: after registration, users receive a private cloud login URL with no installation required.
Feature-wise, it supports URL watches, page diff detection, target element selection, trigger text, ignore text, CSS/xPath rules, and other filtering options. For dynamic websites, the cloud version includes a real Chrome Browser and can use Browser Steps to perform actions such as searching, logging in, adding items to cart, filling fields, and clicking buttons. Notifications are one of its strengths: the site states support for 85+ notification formats, including Discord, Slack, Telegram, Rocket.Chat, Email, Matrix, NTFY, Office 365, and more.
The project is explicitly described as fully opensource and is licensed under Apache 2.0. In addition to the official cloud service, the main content and external coverage repeatedly mention that it can be self-hosted locally, on a server, in a Docker Container, or on a Raspberry Pi. On the API side, it provides a REST API and OpenAPI specification, using the /api/v1/ path and x-api-key authentication. The API covers creating/updating/deleting watches, history, snapshots, tags, notifications, search, URL import, system information, and plugin APIs. curl and Python examples are also provided, giving it a solid foundation for developer integrations.
The cloud subscription costs $8.99/month and can be canceled at any time. It includes up to 5,000 URLs, rechecks from around every 5 minutes, automatic updates, one real Chrome browser, Europe/US/Tor proxies, and 85+ notification types. The payment page shows Stripe, while the terms also mention processors such as PayPal and Paddle. The self-hosted version is free to use, but users need to cover their own deployment, browser runtime, and proxy resource costs.
Its advantages include open-source transparency, self-hosting support, a rich notification ecosystem, strong compatibility with dynamic web pages, and relatively friendly cloud pricing and quotas. Limitations include the lack of information in the reviewed content about enterprise SLA, Chinese-language support, and team permissions; advanced browser concurrency may also require an additional runner. It is well suited to developers, data journalists, researchers, small businesses, deal-hunting/price-comparison users, and teams that want to incorporate web page changes into automated workflows.
Access status from mainland China is not stated in the reviewed content, so it is assessed as unknown. Because payments rely on Stripe/PayPal/Paddle, and notifications often integrate with overseas services such as Slack, Discord, and Telegram, users in China may encounter uncertainty around connectivity, payments, or alert delivery channels. If access or compliance is restricted, users can consider self-hosting changedetection.io, or evaluate alternatives such as Distill.io, Visualping, Wachete, Huginn, RSSHub/self-built scripts depending on their needs.
β This review is compiled from public sources and does not constitute a purchase recommendation. Verify all facts on the vendor's official site. Verify on changedetection.io official site.
changedetection.io is an Unknown Dev Tools provider. TG4G tracks its product information, with monthly pricing from $8.99, an overall rating of 9.0/10, and a China-accessibility score of China direct-connect friendly. Click "Visit Official Site" to reach changedetection.io directly.